The World of Pure Love Starting from the Book

Xu Fei accidentally got a system that can travel through various hentai worlds. What he has to do is to change the tragic fate of all the heroines and let them get a new life... This book is more realistic, so there will be some plots in the book. People with mental obsession should be careful. This is a hentai book, please do not use the world view of the mainstream anime as a substitute